The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2003
Filed:
Oct. 03, 2000
James C. Stensrud, Grand Rapids, MN (US);
Kinetico Incorporated, Newbury, OH (US);
Abstract
A process of making ceramic spheroids by firing clay spheroids comprising by weight percent: FeO (3.22-5.21), Fe O (3.40-5.11), SiO (52.49-59.42), CaO (1.99-7.96), MgO (2.81-4.69), Al O (12.05-17.65), TlO (0.58-0.71), MnO (0.07-0.19), Na O (0.47-0.86), K O (1.70-2.37), P O (0.13-0.19), S (0.03-0.29), CO (0.90-8.23), Organic C (0.22-1.04), H O+ (4.14-7.28), H O− (2.12-5.48) in contact with a particulate parting agent selected from aluminum oxide, magnesium oxide, and their precursors at a sufficiently high temperature and for a sufficiently long time to form a shell. Preferably, the clay spheroids are obtained from a deposit located at Hallock in Kittson County Minn., U.S.A.